UK's Prince Philip has 'exploratory' surgery

Prince Philip: A life in pictures – July 1922: Prince Philip of Greece as a toddler.

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Prince Philip: A life in pictures – July 1935: Prince Philip of Greece in Scotland dressed for the Gordonstoun School's production of "MacBeth."

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Prince Philip: A life in pictures – 1935: Prince Philip, Duke of Edinburgh, as a young man.

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Prince Philip: A life in pictures – July 1947: Princess Elizabeth and her fiance, Philip Mountbatten, at Buckingham Palace, after their engagement announcement.

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Prince Philip: A life in pictures – July 31, 1947: Prince Philip, Duke of Edinburgh, bowling at the nets during cricket practice.

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Prince Philip: A life in pictures – November 20, 1947: Prince Philip and Princess Elizabeth at Buckingham Palace after their wedding.

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Prince Philip: A life in pictures – July 20, 1949: Prince Philip bowling during a village cricket match in Mersham, Kent, against the neighboring village of Aldington.

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Prince Philip: A life in pictures – August 1951: Princess Elizabeth, Prince Philip and their children Prince Charles and Princess Anne.

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Prince Philip: A life in pictures – October 17, 1951: The Duke of Edinburgh dances with his wife, Princess Elizabeth, at a square dance in their honor in Ottawa, by Governor General Viscount Alexander.

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Prince Philip: A life in pictures – February 6, 1952: Queen Elizabeth II and Prince Philip on board the destroyer Crusader, bound for Victoria and the first leg of their Commonwealth tour. On the same day, King George VI passed away in England and the royal tour was cut short.

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Prince Philip: A life in pictures – June 2, 1953: Prince Philip, Queen Elizabeth II and their children, Prince Charles and Princess Anne, wave from the balcony of Buckingham Palace after her Coronation Ceremony.

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Prince Philip: A life in pictures – 1961: Queen Elizabeth II and Prince Philip tour the streets of Rome.

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Prince Philip: A life in pictures – August 1962: Prince Philip at the helm of his yawl, "Bloodhound," during Cowes Regatta.

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Prince Philip: A life in pictures – March 24, 1964: Prince Philip laughs as the Beatles fight over the single award that he presented to them at the Carl-Alan Awards ceremony.

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Prince Philip: A life in pictures – June 13, 1964: Queen Elizabeth II, Prince Philip, Prince Andrew and Prince Edward wave to the crowds from the balcony at Buckingham Palace during the Trooping of the Colour.

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Prince Philip: A life in pictures – June 12, 1965: Queen Elizabeth II and Prince Philip return to Buckingham Palace after the Trooping The Colour ceremony.

Prince Philip: A life in pictures – August 6, 1967: Prince Philip competes in a bicycle polo match at Windsor.

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Prince Philip: A life in pictures – November 26, 2001: Queen Elizabeth II and the Duke of Edinburgh pose for a photo at Buckingham Palace to commemorate her Golden Jubilee in 2002.

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Prince Philip: A life in pictures – May 13, 2005: The Duke of Edinburgh rides his mini motorbike at the Royal Windsor Horse Show at Home Park, Windsor Castle.

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Prince Philip: A life in pictures – June 14, 2007: The Duke of Edinburgh stands behind Queen Elizabeth II after a remembrance service commemorating the 25-year anniversary of the Falklands conflict in Pangbourne, Berkshire.

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Prince Philip: A life in pictures – March 3, 2010: The Duke of Edinburgh inspects the Guard of Honourat the Horse Guards Parade.

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Prince Philip: A life in pictures – July 3, 2010: Queen Elizabeth II talks to Prince Philip, Duke of Edinburgh, during the Canadian concert for Human Rights in Winnipeg, Canada.

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Prince Philip: A life in pictures – June 11, 2011: Queen Elizabeth II and Prince Philip attend the annual Trooping the Colour ceremony in a horse and carriage.

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Prince Philip: A life in pictures – May 1, 2012: Prince Philip visits Sherborne Abbey as part of the Diamond Jubilee tour of the country.

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Prince Philip: A life in pictures – June 6, 2013: Queen Elizabeth II presents Prince Philip with New Zealand's highest honor, the Order of New Zealand, at Buckingham Palace.

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Prince Philip: A life in pictures – February 24, 2014: Prince Philip, colonel of the Grenadier Guards, visits the 1st Battalion of the Grenadier Guards in Aldershot, England.

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Prince Philip: A life in pictures – June 20, 2014: Queen Elizabeth II and Prince Philip arrive on day four of Royal Ascot horse race in Ascot, England.

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Prince Philip: A life in pictures – June 25, 2014: Prince Philip signs the guest book at Hillsborough Castle in Belfast, Northern Ireland.

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Story highlights

Prince "progressing satisfactorily" after surgery

Prince Philip, 91, may be hospitalized for up to two weeks

He's been hospitalized several times recently, including for bladder infections

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The prince showed no signs of illness Thursday at a presentation at Buckingham Palace, according to the Press Association. The news agency reported Philip was joking and laughing with guests at a ceremony where the queen made him a member of the Order of New Zealand.

After the presentation, the queen and Philip hosted a garden party in the grounds of Buckingham Palace as part of celebrations for the 60th anniversary of the queen's coronation.

He and other members of the royal family also attended a service at Westminster Abbey on Tuesday to mark the anniversary.

Philip left Greece a year after he was born there, following the 1922 overthrow of his uncle King Constantine I. Despite his roots in that country, he has a mixed ancestry and, like his wife, is a great-great-grandchild of Britain's Queen Victoria.

A Royal Navy veteran, he met Elizabeth in 1939 and married her in November 1947. They have four children.

In addition to his royal and military duties, Philip has served as president of the World Wildlife Fund and the International Equestrian Foundation.

Philip has had a number of documented health problems in recent years, including treatment for a blocked coronary artery in December 2011 and a hospitalization in June 2012 for a bladder infection. He was admitted again to a hospital -- this time in Scotland -- for treatment of the latter ailment two months later.